11311013012 has 24 divisors (see below), whose sum is σ = 21334374600. Its totient is φ = 5216190336.

The previous prime is 11311013003. The next prime is 11311013017. The reversal of 11311013012 is 21031011311.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1014040336 + 10296972676 = 31844^2 + 101474^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11311013017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24587 + ... + 152402.

It is an arithmetic number, because the mean of its divisors is an integer number (888932275).

Almost surely, 2^11311013012 is an apocalyptic number.

It is an amenable number.

11311013012 is a deficient number, since it is larger than the sum of its proper divisors (10023361588).

11311013012 is a wasteful number, since it uses less digits than its factorization.

11311013012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178235 (or 178233 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 11311013012 its reverse (21031011311), we get a palindrome (32342024323).

The spelling of 11311013012 in words is "eleven billion, three hundred eleven million, thirteen thousand, twelve".